Cotton-gin.



J. R. FORD YGE.

COTTON GIN.

APPLICATION FILED AUG. 17, 1909.

Patented July 9, 1912.

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Specification of Letters Patent.

Application filed August 17, 1809. Serial No. 518,328.

To all whom it may concern:

Be it known that I, JOHN R. Fonoron, a citizen of the United States, residing at Little Rock, in the county of Pulaski and State of Arkansas, have invented an Improvement in Cotton-Grins, of which the following description, in connection with the accompanying drawings, is a specificat on, like letters on the drawings representing like parts.

This invention pertains to certain new and useful improvements in cotton gins, and relates more particularly to the means for removing the cotton from the saws and separating the motes and cotton.

Heretofore it has been customary to remove the cotton from the saw teeth of a cotton gin by means of brushes, or blasts of air directed more or less across the faces of the saws. These methods are 0 en to various objections well known in t e art, and many attempts have been made to overcome such objections. Among other methods it has been proposed to replace the prior air blasts by air suction devices, but owing to the peculiar action of the induced air currents, and the absence of proper nozzle formation suitable to the management of suction currents, these attempts have met with only partial success.

The object of the present invention is to overcome the difiiculties heretofore encountered by providing improved means whereby the cotton may be removed from the saws and to so relatively disppse the elements thereofwith respect to t e saws that the reco nized merits of suction or vacuum produced air currents may be rendered available for eflectively removing the cotton from the saws free from motes and other impurities.

With these generally stated objects in view, the invention consists of the parts, elements and combinations hereinafter more fully described in connection with the accompanying drawings of a form or embodiment of the invention.

In the drawing-Figure 1 is a transverse sectional View of a simple form of saw gin, illustrating my invention; and Fig. 2 1s a detail.

Referring to the drawing, 10 designates the casing of any usual or desired character provided with suitable means for sup orting the shaft 11 on which is moun the series of saws 12. Said saws ext n between the usual ribs 13 into the roll box 14 formed between said ribs and the front 0 the casing. 'The parts thus far described, as well as the support 15 at the lower end-o the roll box, and the teeth 16, are, or may be of any usual or desired character.

Patented July 9, 1912.

It is essential for proper results and clean product that not only the saws be fully cleared of their load of cotton each time they make a revolution, so as not to tear or injure the fiber by repeated drawing between the saw ribs, and other waste constituting the motes be effectively removed from the cotton before the latter is finally taken from the saws and conveyed to the usual condenser or other desired place.

Located below the saws 12 is a vacuum chamber or conduit 20 connected to any usual or desired form of vacuum roducing means, such as a fan or the like, w ich being well known need not be further described. Extending forwardly from the chamber or conduit20 is the suction nozzle 21 formed by converging upper and lower walls 22, 23, the upper wall being provided with a hinged section 24, the lower wall terminating in a sharp lip 25 adjacent the peripheries of the saws. A series of fingers 26 or like means, which may vfor identification be termed a mote deflector, depend between the saws and terminate just below the inlet opening of the nozzle 21 to prevent motes grtering the nozzle opening with the cotton It will be noted that the nozzle 21 is so positioned that it will suck the cotton off the saws at a point just above the center of the saw axles. By means of this arrangement the motes, hulls and other trash are thrown off the saws, and upon striking the fingers 26 are deflected downwardly and away from. the inlet of the nozzle. In addition to this by placing the nozzle to one side trash will not fall into the same as when located below the saws, even where fingers 26 are not employed, and by pointing the fingers or mote .deflector directly downward,

as shown, no trash accumulates on the back side of the fingers. V

The hinged section 24 is rounded at 27 on the ed e farthest from the inlet, whereby the inrus ing air from the outside and the air which is following the saws can combine to provide a resulting current which is most powerful and efiicient and will efiecbut that all trash, hulls tivel remove the cotton. If the hinged mem er 24' were provided with a sharp point, similar .to Ii 25, the same would act as a dam or de ector to the current of air that naturally follows the saws, and thus impede removal of the cotton.

Obviously, .changes in details might be made within the true scope of the present invention, .and the form and relation of parts be altered to suit the conditions or use within the spirit of the present invention.

From the construction described as one convenient and practical form of the invention, it will be noted that between the point where the saws detach the fiber from the seed, as, for instance, where the saws pass between the ribs or other seed obstructing means and the opening of the suction nozzle, the saws act to throw oif the motes 'and heavy particles by centrifugal action,

and that between said point and the nozzle opening the mote deflector is arranged to separate "the motes from the cotton fiber, with the result that clean cotton passes into the suction nozzle.

Having thus fully described my invention what I claim as new and desire to secure by Letters Patent of the United States, 1s

1. In a cotton gin employing suction currents of air for removing cotton from the saws, the combination of a series of saws and cooperating means for detaching the fiber from the seed, and a suction nozzle having its inlet opening adjacent and exterior to the peripheries of the saws and wholly above the axis of the saws, said saws acting centrifugally between the point where they detach the fiber 'from the seed andthe inlet of the nozzle to throw ofi the motes. v r

2. In a cotton gin, the combination of a series of saws and cotiperating means to de tach fiber from the seed at the upper portion of the saws, a suction nozzle having its inlet opening above the axis of the saws, and the wall of said nozzle first approached by the saw teeth as the; revolve being provided with a rounded lip, a vacuum cham-' her in connection with the nozzle, and means to intercept motes thrown from the saws. 3. In a cotton gin, the combination of a zle having its inlet opening disposed adjacent to and exterior of the peripheries of the saws and'above the center of the saws, the

walls of the nozzle opening being in difierent planes extending transversely of and across the series of saws, and a vacuum chamber communicating with said suction nozzle. v Y v 4. In a cotton gin, the combination of a series of saws, a suction nozzle having its openingdisposed at the rear portion of the peripheries :Qf the saws, means for causing the motesto be separated from the cotton before the latter reaches the nozzle opening at the rear of the saws, and a vacuum chamber'communicating with said nozzle.

5. In a cottongin, the combination of a.

series of saws, a suction nozzle having its inlet opening adjacent the peripheries of said saws and disposed at the rear thereof, the wall of said nozzle first approached by the saw teeth as they revolve being provided with a hinged member having a rounded lip, and a vacuum chamber communicating with said nozzle.

6. In a cotton gin, the combination of a series of saws, a suction nozzle having. its inlet opening adjacent the peripheries of said saws, the wall of said nozzle last approached by the saw teeth as they cross the nozzle opening being provided with a sharp lip, the other wall thereof being provided with a hinged member having a rounded lip, and a vacuum chamber communicating with said nozzle.

7 In a cotton gin, the combination of a series of saws, a suction nozzle having its inlet opening adjacent'the peripheries of said saws and above the saw axis, a series of fingers located'between the saw axis and said inlet opening and extending downwardly between-the saws to a point below said inlet opening, and'a vacuum chamber communicating with said nozzle.

p 8. In a cotton gin, the combination ofa series of saws, a suction nozzle having lts mletop'ening adjacent the peripheries of said saws, a vacuum chamber communicating with said nozzle, and a series of fingers-located between the saw axis and said inlet opening and "extending downward] between the saws to a point below sai .inlet opening.

9. In a cotton the combination of a series of saws, a suction nozzle-having'its inlet opening adjacent the peripheries of said saws and above the saw axis,a vacuum chamber communicating with said nozzle, and a mote board having slotted portions extended across thev entrance to-said nozzle.

10. In a cotton gin, the combination of a series of saws, a suction nozzle having its incating with said nozzle and a series of fin-.

gers extending across the entrance to said nozzle.

series of s'aws. a suction nozzle having its let opening adjacent the peripheries of said. i

135 11. In a cotton gin, thecombination of a v inlet opening disposed at the rear and adjacent the peripheries of said saws, the wall of said nozzle last. approached by the saw teeth combination of a series of saws, a suction nozzlehaving an opening of less extent than the diameter of the saws and disposed adjacent the rear portion of the saws, and means extending over the nozzle opening for preventing motes, waste and the like entering the nozzle.

13. In a cotton gin, the combination of a series of saws and cooperating means for separating-fiber from the'seed, a suctionnozzle, and a mote deflector interposed between the nozzle opening and the point where the saws remove the fiber from the seed to pre- 14. In a cotton gin, the combination'of a series of saws and cooperating means for separating fiber from the seed, a suction noz zle, and a mote deflector comprising a series of fingers interposed between the nozzle opening move the fiber from the seed to prevent motesand the like from passing into the nozzle opening. a

In testimony whereof Iha've signed my name to this specification,- in the presence of two subscribing witnesses.

7 JOHN R.- FORDYCE. Witnesses: E. J. BODMAN,

C. D. GOLDTHWAITE.

and the point where the saws re- 

